Effects of Soda Lime Silicate Content on Industrial Stoneware Bodies Prepared by Pressing Method

Abstract

Stoneware clay includes ball clay in every respect except that do not sintering to a white product. Indeed, stoneware containing soda lime silicate could improve physical and mechanical properties. Thus, the aim of this study was to investigate influence of soda lime silicate content on industrial stoneware bodies with different weight percent (wt%) at sintering temperature 950 °C and 1100 °C. Rectangular sample were produced by uniaxial pressing at 40 MPa. Chemical composition was determined by using XRF. The thermal behavior was determined by thermogravimetric and different thermal analysis (TGA-DTA). The scanning electron microscopy (SEM) was used for microstructure analysis. The water absorption of the sample was determined using Archimedes’ method. The mechanical strength of stoneware bodies is important for many type applications and can be determined by measuring flexural strength (MOR). The water absorption decreased with optimum weight percent (wt%) of soda lime silicate into industrial stoneware bodies. The experimental result showed that desirable properties of stoneware bodies can be achieved with 5 wt% of soda lime silicate. As conclusion, optimum 5 wt% of soda lime silicate will influence physical and mechanical properties of industrial stoneware bodies.